KiwiRail staff and contractors have replaced sleepers along 200m of track as part of a $3 million upgrade on the Castlecliff branch in Whanganui.
The work has been made possible by the Government decision to allocate money from the Provincial Growth Fund.
The upgrade will mean that mainline locomotives are able to use the Castlecliff branch line.
The investment made by central Government increases connectivity and improves resilience.
KiwiRail executive general manager operations Siva Sivapakkiam said that the stronger connections it provides will build a better regional economy.